./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d115e09498e3f278fd539730f0fa55e0745770e0304e10455a14000311085b68 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 12:15:42,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:15:43,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:15:43,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:15:43,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:15:43,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:15:43,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:15:43,100 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:15:43,101 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:15:43,102 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:15:43,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:15:43,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:15:43,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:15:43,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:15:43,106 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:15:43,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:15:43,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:15:43,107 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:15:43,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:15:43,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:15:43,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:15:43,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:15:43,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:15:43,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:15:43,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:15:43,114 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:15:43,114 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:15:43,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:15:43,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:15:43,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:15:43,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:15:43,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:15:43,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:15:43,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:15:43,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:15:43,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:15:43,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:15:43,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:15:43,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:15:43,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:15:43,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:15:43,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:15:43,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:15:43,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:15:43,128 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d115e09498e3f278fd539730f0fa55e0745770e0304e10455a14000311085b68 [2024-11-09 12:15:43,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:15:43,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:15:43,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:15:43,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:15:43,431 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:15:43,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c [2024-11-09 12:15:44,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:15:45,210 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:15:45,210 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c [2024-11-09 12:15:45,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d89c135/0b6d8cf11ede49d8a31f30203cb260e0/FLAG887616211 [2024-11-09 12:15:45,235 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d89c135/0b6d8cf11ede49d8a31f30203cb260e0 [2024-11-09 12:15:45,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:15:45,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:15:45,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:15:45,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:15:45,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:15:45,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495640b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45, skipping insertion in model container [2024-11-09 12:15:45,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,271 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:15:45,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:15:45,496 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:15:45,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:15:45,541 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:15:45,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45 WrapperNode [2024-11-09 12:15:45,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:15:45,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:15:45,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:15:45,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:15:45,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,587 INFO L138 Inliner]: procedures = 16, calls = 77, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 117 [2024-11-09 12:15:45,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:15:45,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:15:45,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:15:45,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:15:45,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,605 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,634 INFO L175 MemorySlicer]: Split 46 memory accesses to 8 slices as follows [2, 8, 4, 7, 7, 4, 8, 6]. 17 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 13 writes are split as follows [0, 3, 2, 1, 2, 2, 1, 2]. [2024-11-09 12:15:45,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:15:45,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:15:45,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:15:45,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:15:45,660 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (1/1) ... [2024-11-09 12:15:45,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:15:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:45,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 12:15:45,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 12:15:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:15:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:15:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 12:15:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 12:15:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 12:15:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 12:15:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 12:15:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 12:15:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-09 12:15:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 12:15:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 12:15:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 12:15:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 12:15:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:15:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 12:15:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 12:15:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 12:15:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 12:15:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-09 12:15:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_41_0 [2024-11-09 12:15:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_41_0 [2024-11-09 12:15:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 12:15:45,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 12:15:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 12:15:45,884 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:15:45,886 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:15:46,447 INFO L? ?]: Removed 141 outVars from TransFormulas that were not future-live. [2024-11-09 12:15:46,448 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:15:46,466 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:15:46,467 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 12:15:46,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:15:46 BoogieIcfgContainer [2024-11-09 12:15:46,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:15:46,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:15:46,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:15:46,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:15:46,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:15:45" (1/3) ... [2024-11-09 12:15:46,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1c4c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:15:46, skipping insertion in model container [2024-11-09 12:15:46,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:15:45" (2/3) ... [2024-11-09 12:15:46,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1c4c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:15:46, skipping insertion in model container [2024-11-09 12:15:46,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:15:46" (3/3) ... [2024-11-09 12:15:46,477 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_bresenham-ll.c [2024-11-09 12:15:46,495 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:15:46,495 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2024-11-09 12:15:46,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:15:46,575 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e63e433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:15:46,575 INFO L334 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-11-09 12:15:46,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 76 states have (on average 1.8157894736842106) internal successors, (138), 135 states have internal predecessors, (138), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 12:15:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 12:15:46,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:46,585 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 12:15:46,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:46,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:46,589 INFO L85 PathProgramCache]: Analyzing trace with hash 115254, now seen corresponding path program 1 times [2024-11-09 12:15:46,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:46,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867572433] [2024-11-09 12:15:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:46,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867572433] [2024-11-09 12:15:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867572433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:46,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:46,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 12:15:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64328485] [2024-11-09 12:15:46,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:46,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 12:15:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 12:15:47,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 12:15:47,017 INFO L87 Difference]: Start difference. First operand has 141 states, 76 states have (on average 1.8157894736842106) internal successors, (138), 135 states have internal predecessors, (138), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:47,064 INFO L93 Difference]: Finished difference Result 270 states and 283 transitions. [2024-11-09 12:15:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 12:15:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 12:15:47,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:47,082 INFO L225 Difference]: With dead ends: 270 [2024-11-09 12:15:47,082 INFO L226 Difference]: Without dead ends: 133 [2024-11-09 12:15:47,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 12:15:47,090 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 3 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:47,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 268 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:15:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-09 12:15:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-09 12:15:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 71 states have (on average 1.8169014084507042) internal successors, (129), 128 states have internal predecessors, (129), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:15:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2024-11-09 12:15:47,130 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 3 [2024-11-09 12:15:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:47,130 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2024-11-09 12:15:47,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2024-11-09 12:15:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 12:15:47,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:47,131 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 12:15:47,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 12:15:47,131 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:47,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:47,132 INFO L85 PathProgramCache]: Analyzing trace with hash 3572996, now seen corresponding path program 1 times [2024-11-09 12:15:47,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:47,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028772117] [2024-11-09 12:15:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:47,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028772117] [2024-11-09 12:15:47,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028772117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:47,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 12:15:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630027741] [2024-11-09 12:15:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:47,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 12:15:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 12:15:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 12:15:47,380 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:47,421 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-11-09 12:15:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 12:15:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 12:15:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:47,424 INFO L225 Difference]: With dead ends: 133 [2024-11-09 12:15:47,424 INFO L226 Difference]: Without dead ends: 132 [2024-11-09 12:15:47,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 12:15:47,426 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 2 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:47,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 255 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:15:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-09 12:15:47,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-09 12:15:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 71 states have (on average 1.8028169014084507) internal successors, (128), 127 states have internal predecessors, (128), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:15:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2024-11-09 12:15:47,443 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 4 [2024-11-09 12:15:47,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:47,444 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2024-11-09 12:15:47,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2024-11-09 12:15:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 12:15:47,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:47,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 12:15:47,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 12:15:47,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:47,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash 110763000, now seen corresponding path program 1 times [2024-11-09 12:15:47,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:47,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796267129] [2024-11-09 12:15:47,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:47,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:47,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:47,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796267129] [2024-11-09 12:15:47,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796267129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:47,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:47,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 12:15:47,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162454736] [2024-11-09 12:15:47,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:47,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 12:15:47,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:47,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 12:15:47,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 12:15:47,682 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:47,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:47,754 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2024-11-09 12:15:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 12:15:47,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 12:15:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:47,756 INFO L225 Difference]: With dead ends: 132 [2024-11-09 12:15:47,758 INFO L226 Difference]: Without dead ends: 131 [2024-11-09 12:15:47,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:15:47,759 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 3 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:47,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 377 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:15:47,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-09 12:15:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-09 12:15:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 71 states have (on average 1.7887323943661972) internal successors, (127), 126 states have internal predecessors, (127), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:15:47,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2024-11-09 12:15:47,770 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 5 [2024-11-09 12:15:47,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:47,771 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2024-11-09 12:15:47,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:47,771 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2024-11-09 12:15:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 12:15:47,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:47,772 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 12:15:47,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 12:15:47,772 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:47,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash -861314170, now seen corresponding path program 1 times [2024-11-09 12:15:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009128086] [2024-11-09 12:15:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:47,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:47,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009128086] [2024-11-09 12:15:47,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009128086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:47,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:47,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 12:15:47,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185401372] [2024-11-09 12:15:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:47,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 12:15:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 12:15:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 12:15:47,951 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:47,997 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2024-11-09 12:15:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 12:15:47,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 12:15:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:47,999 INFO L225 Difference]: With dead ends: 131 [2024-11-09 12:15:47,999 INFO L226 Difference]: Without dead ends: 130 [2024-11-09 12:15:48,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:15:48,001 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 2 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:48,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 377 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:15:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-09 12:15:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-09 12:15:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.7746478873239437) internal successors, (126), 125 states have internal predecessors, (126), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 12:15:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2024-11-09 12:15:48,010 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 6 [2024-11-09 12:15:48,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:48,011 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2024-11-09 12:15:48,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2024-11-09 12:15:48,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 12:15:48,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:48,015 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:48,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 12:15:48,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:48,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash -889662140, now seen corresponding path program 1 times [2024-11-09 12:15:48,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:48,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592297078] [2024-11-09 12:15:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:48,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:48,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446356692] [2024-11-09 12:15:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:48,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:48,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:48,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:48,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 12:15:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:48,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 12:15:48,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:48,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:48,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:48,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:15:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:48,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592297078] [2024-11-09 12:15:48,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:48,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446356692] [2024-11-09 12:15:48,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446356692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:48,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:48,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:15:48,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961574142] [2024-11-09 12:15:48,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:48,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:15:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:15:48,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:15:48,349 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:48,486 INFO L93 Difference]: Finished difference Result 208 states and 213 transitions. [2024-11-09 12:15:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:15:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 12:15:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:48,489 INFO L225 Difference]: With dead ends: 208 [2024-11-09 12:15:48,489 INFO L226 Difference]: Without dead ends: 206 [2024-11-09 12:15:48,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:15:48,494 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 144 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:48,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 600 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:15:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-09 12:15:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 155. [2024-11-09 12:15:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.7659574468085106) internal successors, (166), 148 states have internal predecessors, (166), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 12:15:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2024-11-09 12:15:48,519 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 10 [2024-11-09 12:15:48,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:48,519 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2024-11-09 12:15:48,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2024-11-09 12:15:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 12:15:48,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:48,520 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:48,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 12:15:48,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:48,722 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_0_to_41_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:48,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash -266823450, now seen corresponding path program 1 times [2024-11-09 12:15:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988330677] [2024-11-09 12:15:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506654300] [2024-11-09 12:15:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:48,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:48,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:48,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:48,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 12:15:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:48,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 12:15:48,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:48,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:48,908 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:48,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:48,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988330677] [2024-11-09 12:15:48,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506654300] [2024-11-09 12:15:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506654300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:48,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:48,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:15:48,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193155422] [2024-11-09 12:15:48,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:48,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:15:48,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:48,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:15:48,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:15:48,910 INFO L87 Difference]: Start difference. First operand 155 states and 175 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:49,025 INFO L93 Difference]: Finished difference Result 268 states and 293 transitions. [2024-11-09 12:15:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:15:49,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 12:15:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:49,030 INFO L225 Difference]: With dead ends: 268 [2024-11-09 12:15:49,030 INFO L226 Difference]: Without dead ends: 266 [2024-11-09 12:15:49,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:15:49,032 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 175 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:49,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 599 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:15:49,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-09 12:15:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 191. [2024-11-09 12:15:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 126 states have (on average 1.746031746031746) internal successors, (220), 181 states have internal predecessors, (220), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 236 transitions. [2024-11-09 12:15:49,065 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 236 transitions. Word has length 12 [2024-11-09 12:15:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:49,066 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 236 transitions. [2024-11-09 12:15:49,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 236 transitions. [2024-11-09 12:15:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 12:15:49,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:49,067 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:49,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 12:15:49,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 12:15:49,268 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_0_to_41_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:49,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1280703624, now seen corresponding path program 1 times [2024-11-09 12:15:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:49,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545158081] [2024-11-09 12:15:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:49,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793718807] [2024-11-09 12:15:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:49,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:49,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:49,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:49,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 12:15:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:49,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 12:15:49,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:49,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:49,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:49,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:15:49,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:49,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545158081] [2024-11-09 12:15:49,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793718807] [2024-11-09 12:15:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793718807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:49,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:49,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:15:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738878957] [2024-11-09 12:15:49,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:49,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:15:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:15:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:15:49,512 INFO L87 Difference]: Start difference. First operand 191 states and 236 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:49,699 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2024-11-09 12:15:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:15:49,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 12:15:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:49,701 INFO L225 Difference]: With dead ends: 245 [2024-11-09 12:15:49,701 INFO L226 Difference]: Without dead ends: 243 [2024-11-09 12:15:49,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:15:49,703 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 215 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:49,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 764 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:15:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-09 12:15:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 191. [2024-11-09 12:15:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 126 states have (on average 1.7301587301587302) internal successors, (218), 181 states have internal predecessors, (218), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 234 transitions. [2024-11-09 12:15:49,718 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 234 transitions. Word has length 14 [2024-11-09 12:15:49,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:49,719 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 234 transitions. [2024-11-09 12:15:49,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 234 transitions. [2024-11-09 12:15:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 12:15:49,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:49,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:49,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 12:15:49,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:49,924 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_0_to_41_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:49,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1899429846, now seen corresponding path program 1 times [2024-11-09 12:15:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:49,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164935093] [2024-11-09 12:15:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:49,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:49,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502999027] [2024-11-09 12:15:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:49,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:49,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:49,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:49,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 12:15:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:50,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 12:15:50,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:50,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:50,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:50,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:15:50,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:50,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:50,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164935093] [2024-11-09 12:15:50,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:50,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502999027] [2024-11-09 12:15:50,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502999027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:50,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:50,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:15:50,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815358879] [2024-11-09 12:15:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:50,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:15:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:50,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:15:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:15:50,171 INFO L87 Difference]: Start difference. First operand 191 states and 234 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:50,426 INFO L93 Difference]: Finished difference Result 272 states and 294 transitions. [2024-11-09 12:15:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:15:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 12:15:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:50,428 INFO L225 Difference]: With dead ends: 272 [2024-11-09 12:15:50,428 INFO L226 Difference]: Without dead ends: 270 [2024-11-09 12:15:50,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:15:50,430 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 249 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:50,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 761 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:15:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-09 12:15:50,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 191. [2024-11-09 12:15:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 126 states have (on average 1.6984126984126984) internal successors, (214), 181 states have internal predecessors, (214), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 230 transitions. [2024-11-09 12:15:50,440 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 230 transitions. Word has length 16 [2024-11-09 12:15:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:50,440 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 230 transitions. [2024-11-09 12:15:50,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 230 transitions. [2024-11-09 12:15:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 12:15:50,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:50,441 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:50,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 12:15:50,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:50,646 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_0_to_41_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:50,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 9020364, now seen corresponding path program 1 times [2024-11-09 12:15:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:50,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143390541] [2024-11-09 12:15:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:50,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:50,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870216162] [2024-11-09 12:15:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:50,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:50,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:50,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:50,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 12:15:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:50,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 12:15:50,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:50,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:50,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:50,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:50,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:15:50,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:15:50,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:50,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:50,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:50,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143390541] [2024-11-09 12:15:50,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870216162] [2024-11-09 12:15:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870216162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:50,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:50,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:15:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513495727] [2024-11-09 12:15:50,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:50,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:15:50,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:50,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:15:50,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:15:50,961 INFO L87 Difference]: Start difference. First operand 191 states and 230 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:51,277 INFO L93 Difference]: Finished difference Result 236 states and 266 transitions. [2024-11-09 12:15:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:15:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 12:15:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:51,279 INFO L225 Difference]: With dead ends: 236 [2024-11-09 12:15:51,279 INFO L226 Difference]: Without dead ends: 234 [2024-11-09 12:15:51,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-09 12:15:51,280 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 152 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:51,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 807 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:15:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-09 12:15:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 191. [2024-11-09 12:15:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 126 states have (on average 1.6825396825396826) internal successors, (212), 181 states have internal predecessors, (212), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 228 transitions. [2024-11-09 12:15:51,289 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 228 transitions. Word has length 18 [2024-11-09 12:15:51,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:51,289 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 228 transitions. [2024-11-09 12:15:51,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 228 transitions. [2024-11-09 12:15:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 12:15:51,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:51,290 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:51,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 12:15:51,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:51,491 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_0_to_41_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:51,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash 78636910, now seen corresponding path program 1 times [2024-11-09 12:15:51,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:51,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817548511] [2024-11-09 12:15:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:51,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381536804] [2024-11-09 12:15:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:51,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:51,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:51,522 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:51,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 12:15:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:51,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-09 12:15:51,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:51,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:51,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:51,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:51,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:51,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:15:51,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:51,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:51,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:15:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:51,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:51,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817548511] [2024-11-09 12:15:51,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381536804] [2024-11-09 12:15:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381536804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:51,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 12:15:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551713991] [2024-11-09 12:15:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:51,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:15:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:51,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:15:51,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:15:51,954 INFO L87 Difference]: Start difference. First operand 191 states and 228 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:52,416 INFO L93 Difference]: Finished difference Result 234 states and 264 transitions. [2024-11-09 12:15:52,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 12:15:52,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 12:15:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:52,418 INFO L225 Difference]: With dead ends: 234 [2024-11-09 12:15:52,418 INFO L226 Difference]: Without dead ends: 233 [2024-11-09 12:15:52,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-09 12:15:52,419 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 180 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:52,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 937 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:15:52,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-09 12:15:52,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 191. [2024-11-09 12:15:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 126 states have (on average 1.6746031746031746) internal successors, (211), 181 states have internal predecessors, (211), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 227 transitions. [2024-11-09 12:15:52,426 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 227 transitions. Word has length 20 [2024-11-09 12:15:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:52,426 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 227 transitions. [2024-11-09 12:15:52,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 227 transitions. [2024-11-09 12:15:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 12:15:52,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:52,427 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:52,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 12:15:52,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:52,631 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_0_to_41_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:52,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:52,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1857223029, now seen corresponding path program 1 times [2024-11-09 12:15:52,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:52,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129895250] [2024-11-09 12:15:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:52,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603142475] [2024-11-09 12:15:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:52,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:52,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:52,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:52,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 12:15:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:52,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-09 12:15:52,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:52,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:52,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:52,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:52,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:52,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:15:52,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:52,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:53,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 12:15:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:53,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129895250] [2024-11-09 12:15:53,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603142475] [2024-11-09 12:15:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603142475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:53,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:53,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 12:15:53,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137393903] [2024-11-09 12:15:53,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:53,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:15:53,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:15:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:15:53,049 INFO L87 Difference]: Start difference. First operand 191 states and 227 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:53,557 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2024-11-09 12:15:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 12:15:53,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 12:15:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:53,559 INFO L225 Difference]: With dead ends: 233 [2024-11-09 12:15:53,559 INFO L226 Difference]: Without dead ends: 232 [2024-11-09 12:15:53,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-09 12:15:53,560 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 181 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:53,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 869 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:15:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-09 12:15:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 191. [2024-11-09 12:15:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 126 states have (on average 1.6666666666666667) internal successors, (210), 181 states have internal predecessors, (210), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2024-11-09 12:15:53,572 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 21 [2024-11-09 12:15:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:53,574 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2024-11-09 12:15:53,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2024-11-09 12:15:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 12:15:53,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:53,575 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:53,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 12:15:53,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:53,776 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_0_to_41_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:53,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1739338992, now seen corresponding path program 1 times [2024-11-09 12:15:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:53,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617072234] [2024-11-09 12:15:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:53,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:53,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617072234] [2024-11-09 12:15:53,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617072234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:53,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:53,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:15:53,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12105260] [2024-11-09 12:15:53,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:53,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:15:53,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:15:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:15:53,964 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:54,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:54,048 INFO L93 Difference]: Finished difference Result 191 states and 226 transitions. [2024-11-09 12:15:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:15:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 12:15:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:54,050 INFO L225 Difference]: With dead ends: 191 [2024-11-09 12:15:54,050 INFO L226 Difference]: Without dead ends: 190 [2024-11-09 12:15:54,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:15:54,051 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 161 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:54,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 398 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:15:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-09 12:15:54,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-09 12:15:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 126 states have (on average 1.6428571428571428) internal successors, (207), 180 states have internal predecessors, (207), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 223 transitions. [2024-11-09 12:15:54,058 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 223 transitions. Word has length 22 [2024-11-09 12:15:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:54,058 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 223 transitions. [2024-11-09 12:15:54,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 223 transitions. [2024-11-09 12:15:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 12:15:54,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:54,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:54,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 12:15:54,060 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_0_to_41_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:54,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1915066157, now seen corresponding path program 1 times [2024-11-09 12:15:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23626299] [2024-11-09 12:15:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:54,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:54,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23626299] [2024-11-09 12:15:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23626299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:54,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:54,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:15:54,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100975146] [2024-11-09 12:15:54,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:54,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:15:54,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:15:54,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:15:54,255 INFO L87 Difference]: Start difference. First operand 190 states and 223 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:54,339 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2024-11-09 12:15:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:15:54,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-09 12:15:54,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:54,341 INFO L225 Difference]: With dead ends: 190 [2024-11-09 12:15:54,341 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 12:15:54,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:15:54,342 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 158 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:54,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 398 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:15:54,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 12:15:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-09 12:15:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.619047619047619) internal successors, (204), 179 states have internal predecessors, (204), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 220 transitions. [2024-11-09 12:15:54,352 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 220 transitions. Word has length 23 [2024-11-09 12:15:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:54,352 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 220 transitions. [2024-11-09 12:15:54,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 220 transitions. [2024-11-09 12:15:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 12:15:54,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:54,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:54,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 12:15:54,353 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_0_to_41_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:54,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash -762491214, now seen corresponding path program 1 times [2024-11-09 12:15:54,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:54,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202080433] [2024-11-09 12:15:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:54,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116005948] [2024-11-09 12:15:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:54,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:54,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:54,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:54,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 12:15:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:54,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-09 12:15:54,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:54,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:54,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:54,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:54,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:54,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:54,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:54,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:15:54,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 12:15:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:54,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:54,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:54,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202080433] [2024-11-09 12:15:54,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:54,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116005948] [2024-11-09 12:15:54,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116005948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:54,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:54,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 12:15:54,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295345744] [2024-11-09 12:15:54,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:54,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 12:15:54,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 12:15:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:15:54,916 INFO L87 Difference]: Start difference. First operand 189 states and 220 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:55,494 INFO L93 Difference]: Finished difference Result 228 states and 256 transitions. [2024-11-09 12:15:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 12:15:55,495 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-09 12:15:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:55,497 INFO L225 Difference]: With dead ends: 228 [2024-11-09 12:15:55,498 INFO L226 Difference]: Without dead ends: 227 [2024-11-09 12:15:55,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-09 12:15:55,500 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 169 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:55,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 979 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:15:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-09 12:15:55,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 189. [2024-11-09 12:15:55,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.6111111111111112) internal successors, (203), 179 states have internal predecessors, (203), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 219 transitions. [2024-11-09 12:15:55,515 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 219 transitions. Word has length 24 [2024-11-09 12:15:55,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:55,516 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 219 transitions. [2024-11-09 12:15:55,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 219 transitions. [2024-11-09 12:15:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 12:15:55,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:55,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:55,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 12:15:55,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 12:15:55,718 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_0_to_41_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:55,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:55,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2132576207, now seen corresponding path program 1 times [2024-11-09 12:15:55,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:55,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873375617] [2024-11-09 12:15:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:55,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:15:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314935547] [2024-11-09 12:15:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:55,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:15:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:15:55,748 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:15:55,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 12:15:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:55,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-09 12:15:55,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:15:55,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:55,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:15:55,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:55,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:56,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:56,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:15:56,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 12:15:56,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:15:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:56,285 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:15:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:56,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873375617] [2024-11-09 12:15:56,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:15:56,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314935547] [2024-11-09 12:15:56,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314935547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:56,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:56,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 12:15:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366778977] [2024-11-09 12:15:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:56,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 12:15:56,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 12:15:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:15:56,287 INFO L87 Difference]: Start difference. First operand 189 states and 219 transitions. Second operand has 12 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:56,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:56,857 INFO L93 Difference]: Finished difference Result 227 states and 255 transitions. [2024-11-09 12:15:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 12:15:56,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 12:15:56,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:56,860 INFO L225 Difference]: With dead ends: 227 [2024-11-09 12:15:56,860 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 12:15:56,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-09 12:15:56,861 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 166 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:56,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 984 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 12:15:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 12:15:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 189. [2024-11-09 12:15:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.6031746031746033) internal successors, (202), 179 states have internal predecessors, (202), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 218 transitions. [2024-11-09 12:15:56,873 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 218 transitions. Word has length 25 [2024-11-09 12:15:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:56,874 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 218 transitions. [2024-11-09 12:15:56,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 218 transitions. [2024-11-09 12:15:56,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 12:15:56,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:56,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:56,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 12:15:57,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 12:15:57,076 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_0_to_41_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:57,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1685353044, now seen corresponding path program 1 times [2024-11-09 12:15:57,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:57,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381064218] [2024-11-09 12:15:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:57,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:57,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:57,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381064218] [2024-11-09 12:15:57,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381064218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:57,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:57,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 12:15:57,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596857493] [2024-11-09 12:15:57,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:57,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:15:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:57,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:15:57,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:15:57,598 INFO L87 Difference]: Start difference. First operand 189 states and 218 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:57,940 INFO L93 Difference]: Finished difference Result 233 states and 261 transitions. [2024-11-09 12:15:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 12:15:57,941 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 12:15:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:57,942 INFO L225 Difference]: With dead ends: 233 [2024-11-09 12:15:57,942 INFO L226 Difference]: Without dead ends: 232 [2024-11-09 12:15:57,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-09 12:15:57,943 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 124 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:57,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 942 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:15:57,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-09 12:15:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 189. [2024-11-09 12:15:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.5952380952380953) internal successors, (201), 179 states have internal predecessors, (201), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 217 transitions. [2024-11-09 12:15:57,954 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 217 transitions. Word has length 26 [2024-11-09 12:15:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:57,954 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 217 transitions. [2024-11-09 12:15:57,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 217 transitions. [2024-11-09 12:15:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 12:15:57,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:57,955 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:57,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 12:15:57,955 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_0_to_41_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:57,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 706336881, now seen corresponding path program 1 times [2024-11-09 12:15:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:57,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056690491] [2024-11-09 12:15:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:57,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:58,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:58,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056690491] [2024-11-09 12:15:58,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056690491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:58,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:58,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:15:58,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667713273] [2024-11-09 12:15:58,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:58,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:15:58,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:58,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:15:58,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:15:58,442 INFO L87 Difference]: Start difference. First operand 189 states and 217 transitions. Second operand has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:58,747 INFO L93 Difference]: Finished difference Result 232 states and 260 transitions. [2024-11-09 12:15:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:15:58,749 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 12:15:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:58,750 INFO L225 Difference]: With dead ends: 232 [2024-11-09 12:15:58,750 INFO L226 Difference]: Without dead ends: 231 [2024-11-09 12:15:58,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:15:58,751 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 110 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:58,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 870 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:15:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-09 12:15:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 189. [2024-11-09 12:15:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.5873015873015872) internal successors, (200), 179 states have internal predecessors, (200), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 216 transitions. [2024-11-09 12:15:58,762 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 216 transitions. Word has length 27 [2024-11-09 12:15:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:58,763 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 216 transitions. [2024-11-09 12:15:58,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 12:15:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 216 transitions. [2024-11-09 12:15:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 12:15:58,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:58,764 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:58,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 12:15:58,765 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_0_to_41_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:58,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash 613799230, now seen corresponding path program 1 times [2024-11-09 12:15:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733991405] [2024-11-09 12:15:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:58,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:15:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:58,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:58,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733991405] [2024-11-09 12:15:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733991405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:58,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:58,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:15:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559185282] [2024-11-09 12:15:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:58,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:15:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:58,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:15:58,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:15:58,956 INFO L87 Difference]: Start difference. First operand 189 states and 216 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:15:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:59,033 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2024-11-09 12:15:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:15:59,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-09 12:15:59,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:59,035 INFO L225 Difference]: With dead ends: 189 [2024-11-09 12:15:59,035 INFO L226 Difference]: Without dead ends: 188 [2024-11-09 12:15:59,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:15:59,038 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 145 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:59,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 406 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:15:59,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-09 12:15:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-09 12:15:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 126 states have (on average 1.5714285714285714) internal successors, (198), 178 states have internal predecessors, (198), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2024-11-09 12:15:59,047 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 36 [2024-11-09 12:15:59,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:59,047 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2024-11-09 12:15:59,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:15:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2024-11-09 12:15:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 12:15:59,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:59,048 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:59,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 12:15:59,049 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_0_to_41_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:59,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash 613799550, now seen corresponding path program 1 times [2024-11-09 12:15:59,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:59,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774698413] [2024-11-09 12:15:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:59,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:59,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:15:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:15:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:15:59,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:15:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774698413] [2024-11-09 12:15:59,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774698413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:15:59,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:15:59,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:15:59,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770372521] [2024-11-09 12:15:59,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:15:59,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:15:59,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:15:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:15:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:15:59,554 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:15:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:15:59,804 INFO L93 Difference]: Finished difference Result 229 states and 256 transitions. [2024-11-09 12:15:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:15:59,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-09 12:15:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:15:59,806 INFO L225 Difference]: With dead ends: 229 [2024-11-09 12:15:59,806 INFO L226 Difference]: Without dead ends: 227 [2024-11-09 12:15:59,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:15:59,807 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 88 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:15:59,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 792 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:15:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-09 12:15:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 192. [2024-11-09 12:15:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 130 states have (on average 1.5692307692307692) internal successors, (204), 182 states have internal predecessors, (204), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:15:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 220 transitions. [2024-11-09 12:15:59,817 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 220 transitions. Word has length 36 [2024-11-09 12:15:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:15:59,817 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 220 transitions. [2024-11-09 12:15:59,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:15:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 220 transitions. [2024-11-09 12:15:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 12:15:59,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:15:59,822 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:15:59,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 12:15:59,823 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_0_to_41_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:15:59,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:15:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1847907028, now seen corresponding path program 1 times [2024-11-09 12:15:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:15:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064832065] [2024-11-09 12:15:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:15:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:15:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:00,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:16:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:00,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064832065] [2024-11-09 12:16:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064832065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:00,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:16:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590872406] [2024-11-09 12:16:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:00,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:16:00,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:16:00,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:16:00,233 INFO L87 Difference]: Start difference. First operand 192 states and 220 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:00,443 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2024-11-09 12:16:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 12:16:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-09 12:16:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:00,445 INFO L225 Difference]: With dead ends: 231 [2024-11-09 12:16:00,446 INFO L226 Difference]: Without dead ends: 230 [2024-11-09 12:16:00,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:16:00,447 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 87 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:00,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 843 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-09 12:16:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 194. [2024-11-09 12:16:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 132 states have (on average 1.5606060606060606) internal successors, (206), 184 states have internal predecessors, (206), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-09 12:16:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 222 transitions. [2024-11-09 12:16:00,460 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 222 transitions. Word has length 37 [2024-11-09 12:16:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:00,460 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 222 transitions. [2024-11-09 12:16:00,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 222 transitions. [2024-11-09 12:16:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 12:16:00,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:00,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:00,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 12:16:00,462 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_0_to_41_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:00,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1847916958, now seen corresponding path program 1 times [2024-11-09 12:16:00,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:00,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959745151] [2024-11-09 12:16:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:00,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:16:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:00,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:00,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959745151] [2024-11-09 12:16:00,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959745151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:00,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:00,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 12:16:00,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698466937] [2024-11-09 12:16:00,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:00,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 12:16:00,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:00,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 12:16:00,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:16:00,865 INFO L87 Difference]: Start difference. First operand 194 states and 222 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:01,109 INFO L93 Difference]: Finished difference Result 228 states and 259 transitions. [2024-11-09 12:16:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:16:01,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-09 12:16:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:01,111 INFO L225 Difference]: With dead ends: 228 [2024-11-09 12:16:01,111 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 12:16:01,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 12:16:01,112 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 139 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:01,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 744 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 12:16:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 209. [2024-11-09 12:16:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 145 states have (on average 1.5724137931034483) internal successors, (228), 199 states have internal predecessors, (228), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-09 12:16:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 248 transitions. [2024-11-09 12:16:01,122 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 248 transitions. Word has length 37 [2024-11-09 12:16:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:01,122 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 248 transitions. [2024-11-09 12:16:01,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:01,122 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 248 transitions. [2024-11-09 12:16:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 12:16:01,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:01,123 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:01,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 12:16:01,123 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:01,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1450833837, now seen corresponding path program 1 times [2024-11-09 12:16:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:01,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112965012] [2024-11-09 12:16:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:01,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253846028] [2024-11-09 12:16:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:01,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:01,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:01,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:01,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 12:16:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:01,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 12:16:01,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:01,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:01,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:01,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112965012] [2024-11-09 12:16:01,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:01,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253846028] [2024-11-09 12:16:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253846028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:01,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:01,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:16:01,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841189401] [2024-11-09 12:16:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:01,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:16:01,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:16:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:01,330 INFO L87 Difference]: Start difference. First operand 209 states and 248 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:01,396 INFO L93 Difference]: Finished difference Result 256 states and 300 transitions. [2024-11-09 12:16:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:16:01,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-11-09 12:16:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:01,398 INFO L225 Difference]: With dead ends: 256 [2024-11-09 12:16:01,398 INFO L226 Difference]: Without dead ends: 254 [2024-11-09 12:16:01,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:16:01,398 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 84 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:01,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 395 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-09 12:16:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 220. [2024-11-09 12:16:01,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 153 states have (on average 1.5555555555555556) internal successors, (238), 207 states have internal predecessors, (238), 9 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-09 12:16:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 266 transitions. [2024-11-09 12:16:01,409 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 266 transitions. Word has length 38 [2024-11-09 12:16:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:01,409 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 266 transitions. [2024-11-09 12:16:01,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 266 transitions. [2024-11-09 12:16:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 12:16:01,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:01,410 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:01,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 12:16:01,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 12:16:01,611 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_0_to_41_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:01,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1450543104, now seen corresponding path program 1 times [2024-11-09 12:16:01,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:01,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062074846] [2024-11-09 12:16:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:01,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:02,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:16:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062074846] [2024-11-09 12:16:02,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062074846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:02,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:02,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:16:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719654721] [2024-11-09 12:16:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:02,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:16:02,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:16:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:02,024 INFO L87 Difference]: Start difference. First operand 220 states and 266 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:02,200 INFO L93 Difference]: Finished difference Result 249 states and 291 transitions. [2024-11-09 12:16:02,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:16:02,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2024-11-09 12:16:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:02,202 INFO L225 Difference]: With dead ends: 249 [2024-11-09 12:16:02,203 INFO L226 Difference]: Without dead ends: 248 [2024-11-09 12:16:02,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:02,205 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 77 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:02,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 743 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-09 12:16:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 220. [2024-11-09 12:16:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 153 states have (on average 1.5490196078431373) internal successors, (237), 207 states have internal predecessors, (237), 9 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-09 12:16:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 265 transitions. [2024-11-09 12:16:02,216 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 265 transitions. Word has length 38 [2024-11-09 12:16:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:02,217 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 265 transitions. [2024-11-09 12:16:02,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 265 transitions. [2024-11-09 12:16:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 12:16:02,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:02,218 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:02,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 12:16:02,218 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_0_to_41_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:02,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2017163350, now seen corresponding path program 1 times [2024-11-09 12:16:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:02,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682216575] [2024-11-09 12:16:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:02,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:02,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:16:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:02,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:02,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682216575] [2024-11-09 12:16:02,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682216575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:02,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:02,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:16:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151114863] [2024-11-09 12:16:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:02,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:16:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:16:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:02,405 INFO L87 Difference]: Start difference. First operand 220 states and 265 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:02,440 INFO L93 Difference]: Finished difference Result 220 states and 265 transitions. [2024-11-09 12:16:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:16:02,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-09 12:16:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:02,442 INFO L225 Difference]: With dead ends: 220 [2024-11-09 12:16:02,442 INFO L226 Difference]: Without dead ends: 219 [2024-11-09 12:16:02,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:16:02,443 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 3 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:02,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 480 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:16:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-09 12:16:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-11-09 12:16:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 153 states have (on average 1.5294117647058822) internal successors, (234), 206 states have internal predecessors, (234), 9 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-09 12:16:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2024-11-09 12:16:02,454 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 39 [2024-11-09 12:16:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:02,454 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2024-11-09 12:16:02,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2024-11-09 12:16:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 12:16:02,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:02,455 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:02,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 12:16:02,455 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:02,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:02,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1613049617, now seen corresponding path program 1 times [2024-11-09 12:16:02,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:02,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246396746] [2024-11-09 12:16:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:02,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:02,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155821015] [2024-11-09 12:16:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:02,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:02,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:02,480 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:02,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 12:16:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:02,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 12:16:02,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:02,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:02,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246396746] [2024-11-09 12:16:02,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155821015] [2024-11-09 12:16:02,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155821015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:02,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:02,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:16:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169454008] [2024-11-09 12:16:02,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:02,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:16:02,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:16:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:02,679 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:02,792 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2024-11-09 12:16:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:16:02,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-11-09 12:16:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:02,794 INFO L225 Difference]: With dead ends: 230 [2024-11-09 12:16:02,794 INFO L226 Difference]: Without dead ends: 228 [2024-11-09 12:16:02,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:02,795 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 49 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:02,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 383 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-09 12:16:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-09 12:16:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 160 states have (on average 1.50625) internal successors, (241), 212 states have internal predecessors, (241), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-09 12:16:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 273 transitions. [2024-11-09 12:16:02,809 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 273 transitions. Word has length 40 [2024-11-09 12:16:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:02,809 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 273 transitions. [2024-11-09 12:16:02,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 273 transitions. [2024-11-09 12:16:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 12:16:02,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:02,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:02,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 12:16:03,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 12:16:03,012 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_0_to_41_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:03,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1596610942, now seen corresponding path program 1 times [2024-11-09 12:16:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:03,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169122227] [2024-11-09 12:16:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:03,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:03,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:16:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:03,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169122227] [2024-11-09 12:16:03,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169122227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:03,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:03,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:16:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874302017] [2024-11-09 12:16:03,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:03,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:16:03,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:16:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:03,230 INFO L87 Difference]: Start difference. First operand 228 states and 273 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:03,277 INFO L93 Difference]: Finished difference Result 228 states and 273 transitions. [2024-11-09 12:16:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:16:03,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-09 12:16:03,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:03,280 INFO L225 Difference]: With dead ends: 228 [2024-11-09 12:16:03,281 INFO L226 Difference]: Without dead ends: 227 [2024-11-09 12:16:03,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:16:03,282 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 8 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:03,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 462 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:16:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-09 12:16:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-09 12:16:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 160 states have (on average 1.49375) internal successors, (239), 211 states have internal predecessors, (239), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-09 12:16:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 271 transitions. [2024-11-09 12:16:03,302 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 271 transitions. Word has length 40 [2024-11-09 12:16:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:03,303 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 271 transitions. [2024-11-09 12:16:03,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 271 transitions. [2024-11-09 12:16:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 12:16:03,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:03,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:03,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 12:16:03,305 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_0_to_41_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:03,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1463732248, now seen corresponding path program 1 times [2024-11-09 12:16:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:03,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358061611] [2024-11-09 12:16:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:03,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:03,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:16:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:03,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:03,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358061611] [2024-11-09 12:16:03,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358061611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:03,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:03,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:16:03,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974285847] [2024-11-09 12:16:03,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:03,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:16:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:16:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:16:03,477 INFO L87 Difference]: Start difference. First operand 227 states and 271 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:03,553 INFO L93 Difference]: Finished difference Result 232 states and 271 transitions. [2024-11-09 12:16:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:16:03,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2024-11-09 12:16:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:03,555 INFO L225 Difference]: With dead ends: 232 [2024-11-09 12:16:03,555 INFO L226 Difference]: Without dead ends: 230 [2024-11-09 12:16:03,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:03,556 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 62 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:03,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 578 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:16:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-09 12:16:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2024-11-09 12:16:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 160 states have (on average 1.46875) internal successors, (235), 211 states have internal predecessors, (235), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-09 12:16:03,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 267 transitions. [2024-11-09 12:16:03,569 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 267 transitions. Word has length 41 [2024-11-09 12:16:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:03,569 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 267 transitions. [2024-11-09 12:16:03,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:03,569 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 267 transitions. [2024-11-09 12:16:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 12:16:03,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:03,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:03,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 12:16:03,571 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_0_to_41_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:03,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:03,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2044668450, now seen corresponding path program 1 times [2024-11-09 12:16:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051130901] [2024-11-09 12:16:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:03,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:04,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:16:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051130901] [2024-11-09 12:16:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051130901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:04,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 12:16:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123675240] [2024-11-09 12:16:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:04,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 12:16:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 12:16:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:16:04,324 INFO L87 Difference]: Start difference. First operand 227 states and 267 transitions. Second operand has 10 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:04,647 INFO L93 Difference]: Finished difference Result 228 states and 267 transitions. [2024-11-09 12:16:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 12:16:04,649 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2024-11-09 12:16:04,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:04,650 INFO L225 Difference]: With dead ends: 228 [2024-11-09 12:16:04,650 INFO L226 Difference]: Without dead ends: 227 [2024-11-09 12:16:04,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:16:04,651 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 62 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:04,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 879 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-09 12:16:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-11-09 12:16:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 160 states have (on average 1.4625) internal successors, (234), 211 states have internal predecessors, (234), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-09 12:16:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 266 transitions. [2024-11-09 12:16:04,664 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 266 transitions. Word has length 41 [2024-11-09 12:16:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:04,664 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 266 transitions. [2024-11-09 12:16:04,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 266 transitions. [2024-11-09 12:16:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 12:16:04,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:04,665 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:04,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 12:16:04,666 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:04,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash 342516273, now seen corresponding path program 1 times [2024-11-09 12:16:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419707334] [2024-11-09 12:16:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:04,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978745762] [2024-11-09 12:16:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:04,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:04,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:04,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 12:16:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:04,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 12:16:04,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:04,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:04,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:04,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:16:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:04,938 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:04,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419707334] [2024-11-09 12:16:04,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978745762] [2024-11-09 12:16:04,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978745762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:04,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:04,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:16:04,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717974494] [2024-11-09 12:16:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:04,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:16:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:16:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:16:04,940 INFO L87 Difference]: Start difference. First operand 227 states and 266 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:05,089 INFO L93 Difference]: Finished difference Result 253 states and 301 transitions. [2024-11-09 12:16:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:16:05,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-09 12:16:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:05,091 INFO L225 Difference]: With dead ends: 253 [2024-11-09 12:16:05,091 INFO L226 Difference]: Without dead ends: 251 [2024-11-09 12:16:05,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:16:05,092 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 70 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:05,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 386 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-09 12:16:05,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 229. [2024-11-09 12:16:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 162 states have (on average 1.4567901234567902) internal successors, (236), 213 states have internal predecessors, (236), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-09 12:16:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 268 transitions. [2024-11-09 12:16:05,104 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 268 transitions. Word has length 42 [2024-11-09 12:16:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:05,104 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 268 transitions. [2024-11-09 12:16:05,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 268 transitions. [2024-11-09 12:16:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 12:16:05,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:05,105 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:05,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 12:16:05,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 12:16:05,305 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_0_to_41_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:05,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:05,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1039787388, now seen corresponding path program 1 times [2024-11-09 12:16:05,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:05,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287995870] [2024-11-09 12:16:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:05,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:05,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 12:16:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:05,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:05,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287995870] [2024-11-09 12:16:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287995870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:05,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:05,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 12:16:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448386135] [2024-11-09 12:16:05,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:05,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:16:05,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:16:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 12:16:05,478 INFO L87 Difference]: Start difference. First operand 229 states and 268 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:05,574 INFO L93 Difference]: Finished difference Result 286 states and 309 transitions. [2024-11-09 12:16:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:16:05,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-11-09 12:16:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:05,576 INFO L225 Difference]: With dead ends: 286 [2024-11-09 12:16:05,576 INFO L226 Difference]: Without dead ends: 284 [2024-11-09 12:16:05,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:05,577 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 126 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:05,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 608 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-09 12:16:05,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 237. [2024-11-09 12:16:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 170 states have (on average 1.4529411764705882) internal successors, (247), 221 states have internal predecessors, (247), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-09 12:16:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 279 transitions. [2024-11-09 12:16:05,597 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 279 transitions. Word has length 42 [2024-11-09 12:16:05,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:05,597 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 279 transitions. [2024-11-09 12:16:05,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 279 transitions. [2024-11-09 12:16:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 12:16:05,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:05,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:05,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 12:16:05,598 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:05,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1554338957, now seen corresponding path program 1 times [2024-11-09 12:16:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:05,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438895173] [2024-11-09 12:16:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:05,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125260287] [2024-11-09 12:16:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:05,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:05,639 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:05,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 12:16:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:05,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 12:16:05,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:05,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:05,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:05,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:05,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438895173] [2024-11-09 12:16:05,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125260287] [2024-11-09 12:16:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125260287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:05,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:16:05,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827052788] [2024-11-09 12:16:05,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:05,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:16:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:05,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:16:05,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:16:05,868 INFO L87 Difference]: Start difference. First operand 237 states and 279 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:06,075 INFO L93 Difference]: Finished difference Result 259 states and 310 transitions. [2024-11-09 12:16:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:16:06,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-09 12:16:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:06,077 INFO L225 Difference]: With dead ends: 259 [2024-11-09 12:16:06,077 INFO L226 Difference]: Without dead ends: 257 [2024-11-09 12:16:06,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:06,078 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 68 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:06,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 477 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-09 12:16:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 239. [2024-11-09 12:16:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 172 states have (on average 1.447674418604651) internal successors, (249), 223 states have internal predecessors, (249), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-09 12:16:06,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 281 transitions. [2024-11-09 12:16:06,091 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 281 transitions. Word has length 44 [2024-11-09 12:16:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:06,091 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 281 transitions. [2024-11-09 12:16:06,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 281 transitions. [2024-11-09 12:16:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 12:16:06,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:06,092 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:06,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 12:16:06,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-09 12:16:06,297 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:06,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:06,297 INFO L85 PathProgramCache]: Analyzing trace with hash -132621226, now seen corresponding path program 1 times [2024-11-09 12:16:06,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:06,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058167831] [2024-11-09 12:16:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:06,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737333394] [2024-11-09 12:16:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:06,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:06,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:06,328 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:06,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 12:16:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:06,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 12:16:06,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:06,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:06,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:06,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:16:06,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 12:16:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:06,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:16:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058167831] [2024-11-09 12:16:07,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:07,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737333394] [2024-11-09 12:16:07,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737333394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:16:07,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:16:07,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-09 12:16:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158138] [2024-11-09 12:16:07,261 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 12:16:07,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:16:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:07,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:16:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-09 12:16:07,262 INFO L87 Difference]: Start difference. First operand 239 states and 281 transitions. Second operand has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:07,552 INFO L93 Difference]: Finished difference Result 387 states and 454 transitions. [2024-11-09 12:16:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:16:07,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2024-11-09 12:16:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:07,554 INFO L225 Difference]: With dead ends: 387 [2024-11-09 12:16:07,554 INFO L226 Difference]: Without dead ends: 386 [2024-11-09 12:16:07,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-09 12:16:07,556 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 258 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:07,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1111 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-09 12:16:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 293. [2024-11-09 12:16:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 221 states have (on average 1.4751131221719458) internal successors, (326), 272 states have internal predecessors, (326), 11 states have call successors, (11), 7 states have call predecessors, (11), 12 states have return successors, (25), 13 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-09 12:16:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 362 transitions. [2024-11-09 12:16:07,574 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 362 transitions. Word has length 46 [2024-11-09 12:16:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:07,574 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 362 transitions. [2024-11-09 12:16:07,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 12:16:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 362 transitions. [2024-11-09 12:16:07,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 12:16:07,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:07,575 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:07,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 12:16:07,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:07,776 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:07,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash 928885941, now seen corresponding path program 1 times [2024-11-09 12:16:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802342600] [2024-11-09 12:16:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:07,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:07,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181195114] [2024-11-09 12:16:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:07,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:07,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:07,805 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:07,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 12:16:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:07,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 12:16:07,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:07,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:08,055 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:08,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:08,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802342600] [2024-11-09 12:16:08,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181195114] [2024-11-09 12:16:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181195114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:08,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:08,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 12:16:08,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109408606] [2024-11-09 12:16:08,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:08,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 12:16:08,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 12:16:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:16:08,057 INFO L87 Difference]: Start difference. First operand 293 states and 362 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:08,237 INFO L93 Difference]: Finished difference Result 312 states and 389 transitions. [2024-11-09 12:16:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 12:16:08,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2024-11-09 12:16:08,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:08,239 INFO L225 Difference]: With dead ends: 312 [2024-11-09 12:16:08,239 INFO L226 Difference]: Without dead ends: 311 [2024-11-09 12:16:08,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 12:16:08,240 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 81 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:08,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 390 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-09 12:16:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 294. [2024-11-09 12:16:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 222 states have (on average 1.472972972972973) internal successors, (327), 273 states have internal predecessors, (327), 11 states have call successors, (11), 7 states have call predecessors, (11), 12 states have return successors, (25), 13 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-09 12:16:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 363 transitions. [2024-11-09 12:16:08,256 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 363 transitions. Word has length 46 [2024-11-09 12:16:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:08,256 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 363 transitions. [2024-11-09 12:16:08,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 363 transitions. [2024-11-09 12:16:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 12:16:08,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:08,257 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:08,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 12:16:08,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:08,462 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:08,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash 183709327, now seen corresponding path program 1 times [2024-11-09 12:16:08,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:08,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530886358] [2024-11-09 12:16:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:08,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:08,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74005260] [2024-11-09 12:16:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:08,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:08,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:08,491 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:08,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 12:16:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:08,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 12:16:08,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:08,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:08,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:08,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:16:08,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:16:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:08,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:16:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:10,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:10,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530886358] [2024-11-09 12:16:10,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:10,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74005260] [2024-11-09 12:16:10,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74005260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:16:10,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:16:10,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2024-11-09 12:16:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794482880] [2024-11-09 12:16:10,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:16:10,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 12:16:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:10,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 12:16:10,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-09 12:16:10,375 INFO L87 Difference]: Start difference. First operand 294 states and 363 transitions. Second operand has 21 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:13,078 INFO L93 Difference]: Finished difference Result 505 states and 609 transitions. [2024-11-09 12:16:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 12:16:13,079 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-11-09 12:16:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:13,082 INFO L225 Difference]: With dead ends: 505 [2024-11-09 12:16:13,082 INFO L226 Difference]: Without dead ends: 504 [2024-11-09 12:16:13,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2024-11-09 12:16:13,083 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 621 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:13,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1573 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 12:16:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-09 12:16:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 384. [2024-11-09 12:16:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 304 states have (on average 1.5098684210526316) internal successors, (459), 358 states have internal predecessors, (459), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-09 12:16:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 513 transitions. [2024-11-09 12:16:13,108 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 513 transitions. Word has length 47 [2024-11-09 12:16:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:13,108 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 513 transitions. [2024-11-09 12:16:13,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 513 transitions. [2024-11-09 12:16:13,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 12:16:13,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:13,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:13,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 12:16:13,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-09 12:16:13,314 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:13,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1269306753, now seen corresponding path program 1 times [2024-11-09 12:16:13,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:13,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648393212] [2024-11-09 12:16:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:13,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:13,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035549844] [2024-11-09 12:16:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:13,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:13,347 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:13,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 12:16:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:13,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 12:16:13,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:13,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:13,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:13,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:13,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 12:16:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:13,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:13,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648393212] [2024-11-09 12:16:13,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035549844] [2024-11-09 12:16:13,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035549844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:13,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:13,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 12:16:13,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005565966] [2024-11-09 12:16:13,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:13,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 12:16:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:13,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 12:16:13,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:13,622 INFO L87 Difference]: Start difference. First operand 384 states and 513 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:13,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:13,794 INFO L93 Difference]: Finished difference Result 406 states and 542 transitions. [2024-11-09 12:16:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 12:16:13,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2024-11-09 12:16:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:13,796 INFO L225 Difference]: With dead ends: 406 [2024-11-09 12:16:13,796 INFO L226 Difference]: Without dead ends: 405 [2024-11-09 12:16:13,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 12:16:13,797 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 63 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:13,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 461 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:13,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-09 12:16:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 385. [2024-11-09 12:16:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 305 states have (on average 1.5081967213114753) internal successors, (460), 359 states have internal predecessors, (460), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-09 12:16:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 514 transitions. [2024-11-09 12:16:13,817 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 514 transitions. Word has length 47 [2024-11-09 12:16:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:13,818 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 514 transitions. [2024-11-09 12:16:13,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 514 transitions. [2024-11-09 12:16:13,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 12:16:13,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:13,819 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:13,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 12:16:14,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:14,023 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:14,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash -693803529, now seen corresponding path program 1 times [2024-11-09 12:16:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:14,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356848025] [2024-11-09 12:16:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:14,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 12:16:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:14,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 12:16:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:14,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:14,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356848025] [2024-11-09 12:16:14,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356848025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:14,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 12:16:14,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586311764] [2024-11-09 12:16:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:14,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:16:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:14,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:16:14,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:14,591 INFO L87 Difference]: Start difference. First operand 385 states and 514 transitions. Second operand has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:14,946 INFO L93 Difference]: Finished difference Result 406 states and 541 transitions. [2024-11-09 12:16:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:16:14,947 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-09 12:16:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:14,949 INFO L225 Difference]: With dead ends: 406 [2024-11-09 12:16:14,952 INFO L226 Difference]: Without dead ends: 405 [2024-11-09 12:16:14,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-09 12:16:14,953 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 73 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:14,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 679 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-09 12:16:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 386. [2024-11-09 12:16:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 306 states have (on average 1.5065359477124183) internal successors, (461), 360 states have internal predecessors, (461), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-09 12:16:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 515 transitions. [2024-11-09 12:16:14,978 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 515 transitions. Word has length 48 [2024-11-09 12:16:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:14,978 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 515 transitions. [2024-11-09 12:16:14,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 515 transitions. [2024-11-09 12:16:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 12:16:14,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:14,979 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:14,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-09 12:16:14,980 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:14,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash -33072767, now seen corresponding path program 1 times [2024-11-09 12:16:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:14,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086749275] [2024-11-09 12:16:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:15,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403503263] [2024-11-09 12:16:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:15,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:15,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:15,015 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:15,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 12:16:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:15,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 12:16:15,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:15,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:15,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:15,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:15,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 12:16:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:15,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:16:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086749275] [2024-11-09 12:16:15,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403503263] [2024-11-09 12:16:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403503263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:15,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:15,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 12:16:15,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660119527] [2024-11-09 12:16:15,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:15,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 12:16:15,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:15,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 12:16:15,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-09 12:16:15,457 INFO L87 Difference]: Start difference. First operand 386 states and 515 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:15,704 INFO L93 Difference]: Finished difference Result 406 states and 540 transitions. [2024-11-09 12:16:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 12:16:15,705 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2024-11-09 12:16:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:15,707 INFO L225 Difference]: With dead ends: 406 [2024-11-09 12:16:15,707 INFO L226 Difference]: Without dead ends: 405 [2024-11-09 12:16:15,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 12:16:15,708 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 130 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:15,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 390 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:16:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-09 12:16:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 387. [2024-11-09 12:16:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.504885993485342) internal successors, (462), 361 states have internal predecessors, (462), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-09 12:16:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 516 transitions. [2024-11-09 12:16:15,731 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 516 transitions. Word has length 49 [2024-11-09 12:16:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:15,731 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 516 transitions. [2024-11-09 12:16:15,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 516 transitions. [2024-11-09 12:16:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 12:16:15,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:15,732 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:15,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 12:16:15,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:15,933 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_0_to_41_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:15,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1096264346, now seen corresponding path program 1 times [2024-11-09 12:16:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:15,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018962907] [2024-11-09 12:16:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:15,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142127208] [2024-11-09 12:16:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:15,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:15,968 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:15,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 12:16:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:16,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 12:16:16,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:16,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:16,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:16,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:16:16,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 12:16:16,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:16,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 12:16:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:16,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:16:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:16,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:16,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018962907] [2024-11-09 12:16:16,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:16,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142127208] [2024-11-09 12:16:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142127208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:16:16,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:16:16,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-09 12:16:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568623233] [2024-11-09 12:16:16,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:16:16,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 12:16:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:16,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 12:16:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-09 12:16:16,903 INFO L87 Difference]: Start difference. First operand 387 states and 516 transitions. Second operand has 23 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:19,699 INFO L93 Difference]: Finished difference Result 503 states and 615 transitions. [2024-11-09 12:16:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 12:16:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-09 12:16:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:19,701 INFO L225 Difference]: With dead ends: 503 [2024-11-09 12:16:19,701 INFO L226 Difference]: Without dead ends: 501 [2024-11-09 12:16:19,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 12:16:19,703 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 675 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:19,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1583 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 12:16:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-11-09 12:16:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 387. [2024-11-09 12:16:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.485342019543974) internal successors, (456), 361 states have internal predecessors, (456), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-09 12:16:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 510 transitions. [2024-11-09 12:16:19,737 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 510 transitions. Word has length 50 [2024-11-09 12:16:19,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:19,737 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 510 transitions. [2024-11-09 12:16:19,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 510 transitions. [2024-11-09 12:16:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 12:16:19,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:19,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:19,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 12:16:19,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:19,943 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:19,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:19,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1025255623, now seen corresponding path program 1 times [2024-11-09 12:16:19,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:19,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736630238] [2024-11-09 12:16:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:19,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:20,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 12:16:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:20,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 12:16:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:20,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736630238] [2024-11-09 12:16:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736630238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:20,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:20,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:16:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672627684] [2024-11-09 12:16:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:20,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:16:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:16:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:20,079 INFO L87 Difference]: Start difference. First operand 387 states and 510 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:20,178 INFO L93 Difference]: Finished difference Result 387 states and 510 transitions. [2024-11-09 12:16:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:16:20,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-09 12:16:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:20,180 INFO L225 Difference]: With dead ends: 387 [2024-11-09 12:16:20,181 INFO L226 Difference]: Without dead ends: 386 [2024-11-09 12:16:20,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:20,181 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 31 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:20,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 356 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:20,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-09 12:16:20,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2024-11-09 12:16:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 307 states have (on average 1.482084690553746) internal successors, (455), 360 states have internal predecessors, (455), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-09 12:16:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 509 transitions. [2024-11-09 12:16:20,210 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 509 transitions. Word has length 50 [2024-11-09 12:16:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:20,211 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 509 transitions. [2024-11-09 12:16:20,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 509 transitions. [2024-11-09 12:16:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 12:16:20,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:20,212 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:20,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-09 12:16:20,212 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_0_to_41_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:20,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:20,212 INFO L85 PathProgramCache]: Analyzing trace with hash -375543597, now seen corresponding path program 1 times [2024-11-09 12:16:20,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:20,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678490052] [2024-11-09 12:16:20,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:20,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:20,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868745192] [2024-11-09 12:16:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:20,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:20,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:20,237 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:20,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 12:16:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:20,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-09 12:16:20,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:20,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:20,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 12:16:20,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 12:16:20,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:16:20,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:20,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:16:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:20,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:16:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678490052] [2024-11-09 12:16:21,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868745192] [2024-11-09 12:16:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868745192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:16:21,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:16:21,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2024-11-09 12:16:21,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412877985] [2024-11-09 12:16:21,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:16:21,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 12:16:21,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 12:16:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-09 12:16:21,695 INFO L87 Difference]: Start difference. First operand 386 states and 509 transitions. Second operand has 23 states, 20 states have (on average 4.65) internal successors, (93), 19 states have internal predecessors, (93), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:26,225 INFO L93 Difference]: Finished difference Result 498 states and 607 transitions. [2024-11-09 12:16:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 12:16:26,225 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.65) internal successors, (93), 19 states have internal predecessors, (93), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-09 12:16:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:26,227 INFO L225 Difference]: With dead ends: 498 [2024-11-09 12:16:26,227 INFO L226 Difference]: Without dead ends: 497 [2024-11-09 12:16:26,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 12:16:26,229 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 716 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:26,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1795 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 12:16:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-09 12:16:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 386. [2024-11-09 12:16:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 307 states have (on average 1.4690553745928339) internal successors, (451), 360 states have internal predecessors, (451), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-09 12:16:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 505 transitions. [2024-11-09 12:16:26,261 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 505 transitions. Word has length 51 [2024-11-09 12:16:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:26,261 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 505 transitions. [2024-11-09 12:16:26,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.65) internal successors, (93), 19 states have internal predecessors, (93), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 505 transitions. [2024-11-09 12:16:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 12:16:26,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:26,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:26,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 12:16:26,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-09 12:16:26,467 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:26,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1718153085, now seen corresponding path program 1 times [2024-11-09 12:16:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393075985] [2024-11-09 12:16:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:26,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-09 12:16:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:26,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 12:16:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:26,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:26,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393075985] [2024-11-09 12:16:26,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393075985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:16:26,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:16:26,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:16:26,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887945881] [2024-11-09 12:16:26,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:16:26,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:16:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:16:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:26,593 INFO L87 Difference]: Start difference. First operand 386 states and 505 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:16:26,687 INFO L93 Difference]: Finished difference Result 386 states and 505 transitions. [2024-11-09 12:16:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:16:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-09 12:16:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:16:26,689 INFO L225 Difference]: With dead ends: 386 [2024-11-09 12:16:26,690 INFO L226 Difference]: Without dead ends: 385 [2024-11-09 12:16:26,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:16:26,690 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 30 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:16:26,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 356 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:16:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-09 12:16:26,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2024-11-09 12:16:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 307 states have (on average 1.4657980456026058) internal successors, (450), 359 states have internal predecessors, (450), 16 states have call successors, (16), 9 states have call predecessors, (16), 15 states have return successors, (38), 18 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-09 12:16:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 504 transitions. [2024-11-09 12:16:26,737 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 504 transitions. Word has length 51 [2024-11-09 12:16:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:16:26,737 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 504 transitions. [2024-11-09 12:16:26,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 504 transitions. [2024-11-09 12:16:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 12:16:26,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:16:26,738 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:16:26,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-09 12:16:26,738 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_0_to_41_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_0_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_0_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-11-09 12:16:26,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:16:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash -334834390, now seen corresponding path program 1 times [2024-11-09 12:16:26,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:16:26,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804249972] [2024-11-09 12:16:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:26,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:16:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 12:16:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742263049] [2024-11-09 12:16:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:16:26,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:16:26,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:16:26,766 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 12:16:26,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 12:16:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:16:26,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-09 12:16:26,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:16:26,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:26,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:26,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 12:16:27,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:16:27,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-09 12:16:27,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:16:27,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 12:16:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:27,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:16:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:16:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:16:27,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804249972] [2024-11-09 12:16:27,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 12:16:27,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742263049] [2024-11-09 12:16:27,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742263049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:16:27,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 12:16:27,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-09 12:16:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343190569] [2024-11-09 12:16:27,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 12:16:27,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 12:16:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:16:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 12:16:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-09 12:16:27,656 INFO L87 Difference]: Start difference. First operand 385 states and 504 transitions. Second operand has 20 states, 17 states have (on average 5.352941176470588) internal successors, (91), 16 states have internal predecessors, (91), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 12:16:31,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:35,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:16:39,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 12:16:44,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 12:16:48,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 12:16:52,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 12:16:56,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 12:17:00,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:17:04,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 12:17:08,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]